[antlr-interest] Rewrite rule (newbie question)

[ali azimi]

Hi,
   
  I have some grammar and rewrite rules which when I try to generate code from them, it painfully slows my computer down. Could you please tell me what is wrong? a sample of the grammar and the rewrite rule is as follows: is the rewrite rule ok?
   
  
textualsystemdefinition 
 :packagereferenceclause*('system' systemname end entityinsystem+ 'endsystem'(systemname)?end|typebasedsystemdefinition)
 ->^(UNIT packagereferenceclause*) ^('system'systemname end entityinsystem+ 'endsystem' (systemname)? end typebasedsystemdefinition)
 ;
   
  Many  thanks in advance
   
  Best wishes,
   
  Al

       
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